@Switch Blayde
That one.
And I now know that didn't happen in WW2. Screws up the premise of my story.
Probably not what you want, and maybe less relevant for you Americans, but desertions did happen. Sometimes, it was just circumstances, people get lost and left behind in chaos of retreat, were trapped behind enemy lines etc.
I vaguely remember hearing/reading about Australian guys that upon losing contact with command in south east Asia grabbed their port girlfriends, captured a merchant wessel and get lost somewhere in the islands to only resurface at the end of the war and still were, allegedly, welcomed into war veterans community afterwards. Could be a sea story; I admit less than minimal knowledge about that theater.
In Europe, eastern front...
My grandfather deserted twice and was proud that despite forced to wear both Soviet and German uniforms in turn he had made trough the world war without ever firing a shot in combat. He had a good reason for such attitude.
Let me tell a true story.
Once upon a time, five orphaned brothers rented a small farm in Latvia. Let's call them Alfred, Ben, Daniel, Fred and Gary. Their dad had been killed by Russian Cossacks during the Great War, not in battle, on the roadside, allegedly for no good reason, and mom died soon after, before Gary could even really remember her. They knew no relatives either, each of parents seemingly had a secret, but that's a different story.
Alfred, the oldest, eventually learned the craft of electrician and married a city girl Alice. Ben married Cindy, Daniel married Esther, Fred married Fiona, and Gary married Cindy's cousin Lily, the youngest of three daughters in rich farmer's house.
Lily's grandad had bought out the (possibly well over thousand year old) house out of the German mansion (established by the 13th century crusade) in 1888, with lots of land along, and thus Gary got a parcel of land in Lily's dowry, just like the middle daughter Lizbeth had already in hers. Both newlyweds were madly in love but only 16, and Gary worked for his father-in-law until and after he finished his service in Latvian Army (as a Corporal). It wasn't until 1939 when he felt ready to found his own house on his wife's land.
That same year Soviet Union issued an ultimatum to Latvia, and swift occupation followed without much outward resistance, because Latvian dictator (who took control in bloodless coup of 1934 and subsequently banned all political parties but his own national-socialist Peasants Union) had said: "remain in your places; I will remain in mine." Those words were delusional of course, he was much too soon buried in unmarked grave somewhere in deserts of Kazakhstan (that's thousands of miles southeast).
With four cows and a horse Gary was deemed already too wealthy for Communists' Russian peasant standards, two cows were confiscated and he had to pay a punishing tax.
All brothers were in army reserve, inherited by Red Army from Latvian Army upon Latvia's (involuntary) joining the Soviet Union, and when the war started for real were of course immediately mobilized, Gary along his horse and carriage. However, after The Year of Terror German troops were mostly welcomed as liberators by the people and there was only little chaotic fighting in Latvia (Old City of Riga got burned by artillery barrage anyway). Soviet forces routed and fled, Gary deserted and come home, so did Daniel. Alfred as Electrician in Riga central mall (with for some reason had come in Army's control under the dictatorship) just remained in his place, transferring from Soviet to German occupation management. Ben and Fred were missing, and so was Lizbeth' husband, all supposedly forced to retreat with the Red Army into Russia, possibly dead.
Law and order was restored, mostly. (Well, Germans hunted the Jews, but most Latvian Jews were poor and thought to be lazy, and lazy poor were often communists, and communists ought to be hunted, after what they did before the war, so... so it was sold.) As far Gary was considered, relatively normal and prosperous two years followed as he worked fields of both Lily and Lizbeth, practically merging the households of two neighboring houses. Fiona outright moved in with Daniel and Esther. Cindy, she didn't need support, she snatched a German officer. As an undoubtably testament to perceived stability the only child of Lily, my father, was born during German occupation, in 1943.
Tide of the war rolled back, however. Daniel joined Latvian Legion of Waffen SS, volunteering, and so did Alice's brother. Rumor had it that Fred was alive and had become tank commander in the Red Army. Alfred, he was ruled indispensable specialist at the mall and kept his job until he retired in early eighties, and while Germans retreated and Russians returned to Latvian capital again alike (the heroic and fantastic battle of Liberation of Riga allegedly involving amphibious tanks crossing the likes is pure fiction, in reality there rather was even short period of power vacuum between them, again).
Gary was forcibly mobilized again, by Germans this time, and along with his own horse and carriage also, and had to witness the battle of Jelgava, in with the town was literally razed and burned (as legend has it, there was exactly one house left undamaged by the fighting in the whole city). Cut from home by the front line he had no choice but to retreat with Germans to LiepΔja and was ordered onto a ship.
Baltic was stomy, it wasn't a pleasure ride. Late at night the ship stopped to "rescue" board and sink a refugee boat. Early next morning they come under air attack. Infantry soldiers were packed into the cargo hold of the transformed merchant ship, aircraft guns penetrated the thin deck, there were casualties, but the ship remained afloat, somehow.
From Danzig they were transferred to Czechoslovakia, for anti-tank infantry training. With was fun and on the bleeding edge of technology: panzerfausts, pazerschrecks, magnetic mines, grenades, you name it, even the Goliath tracked mine (would we call it drone now?) was covered, but the tactics they were tought and their intended mission were quite obviously suicidal. And remember, Gary's brother was riding a Russian tank. He had no intention to ever use the training in combat. However, it was like a vacation, they were given a lot of freedom and the environment was still peaceful and safe, and there was great amusement park nearby. Czech girls were rather ugly though, at least so Gary said later.
Much too soon they were deployed, marched somewhere, Poland close to German border? Who knows, they had said there's a day walking before the frontline when they merged with another infantry regiment to occupy a school building for the night. Gary with three other guys, another Latvian, a Lithuanian and a Czech were trailing behind a bit. When they come there was no good place to lay down left, or so they decided. The Lithuanian knew some Polish and so they found friendly reception at a nearby house, hot meal, a real bed and possibly even something a little more.
Russian tanks come roaring through the village at night, and someone stupid enough fired at them from the school building. Short but bloody battle ensued. Gary and his guys would have a good flanking position... if they were to reveal themselves, with they didn't. Smoldering ruins of the school surrendered. Russians were too much in a hurry to bother with prisoners, a line against the wall was ordered, machine guns talked. Tanks left to wherever they were sent to, well before dawn.
Gary and his guys left to, in another direction, after ripping off all insignia, with intention to eventually walk home. The Czech guy split the next day, the Lithuanian's home wasn't much out of the way, and he knew the area, supposedly. It was indeed already somewhere in Lithuania when they were stopped and arrested, surrendering without much fuss and demanding protection as prisoners of war.
Filtration camp... that was a long train ride, to Komsomolsk-on-Amur. Where's that? Northeast of China. Seriously, there's no much further east to go (without going tooo much north), only Sakhalin. First winter was harsh. Thanks to befriending some criminal convicts in the camp, who in turn knew the guards they didn't die, guards helpfully looked other way when they gathered grass on the side of the railroad.
Then a scheme to artfully inflate their perceived volume of lumber gathered was devised, the stacks on railcars were hollow, but their rations increased. Risky, but better bullet than slow death from hunger. Second year Gary managed to join construction team building officers homes; there was nothing there. That was almost normal work, even with tips, as they were. Then, one day he was told he is free to go. Just like that, go out the gates, and you're on your own in the Russian far east. All the Russia the long way is quite a walk, but he made it home, eventually. Siberian girls... he got the thousand yard stare, "eh, didn't I have wife with son at home... who knows would I make it back," he admitted.
Luckily, unlike the First World War, there had been no fighting in the immediate vicinity of our house. Russian aviation had bombed the area anyway, but the only major building hit was the Lily's father's great barn; the massive concrete walls stay empty to this day, 75 years later. Other than that Home was almost as Gary had left it. The materials gathered for his dream 'real' house were lost of course, but women had managed well on their own, he even had to pay the ridiculous "wealth" tax soon again.
Daniel with the Legion was in the Curland Pocket, where fierce battles were fought till the very last day of the war in Europe, and Daniel had died there, sometime just then. Fred, the brother red army tank commander, had died too, and right about there too, but we don't know when and where exactly. Did brothers met in battle? Unlikely it seems, but not impossible; the available records aren't good enough to either disprove or claim they did indeed.
We never learned what happened to Lizbeth's husband, and she never remarried. Cindy wrote home from Australia, she had made it to American occupation zone in Germany and then across the globe, with an American guy in tow, or so she claims. Alice's brother from the Legion married my future mom's aunt, in Canada; we only learned about this connection when they come visiting home for the first time, in 1989.
Ben come into Gary and Lily's kitchen one Saturday afternoon in 1957, kicked stool into the corner and sat down. It's said he had reasonably clean clothes and appeared well fed, but that was it, reportedly he had no luggage, and his eyes, the look in them was dead, haunted. He got a room in a nearby house and visited often, but lived his days as a hermit, never telling a word where he had been and what did through the war. We know nothing about him and those seventeen years, like he haven't existed. Sister claims I have met him, but I don't remember, was too young.
Just about then Gary along with bunch of like-minded guys decided not to wait for what wouldn't happen and founded a communal farm like the Soviets wanted, before they would be forced to do the same under foreigner management. Eventually it became one of top five communal farms in the republic. Himself, he took mechanization training and became manager of the machine shop.
Grandpa lived long enough to see the declaration of independence and get his land back in private property.