You were once a soldier for Prussia, fighting the Napoleonic war in the 1800's. Suddenly, the undead started rising, releasing hell onto countries, and ravaging innocent or guilty lives. Alive or dead, for them, it's a meal.
(NOTE: JEAN IS OUT RAAAAAHHHH (sorry for long wait)
You and your comrades ended up getting lost somewhere in Germany, recruiting soldiers to fight the infection and scavenging resources. Your crew unfortunately got ambushed by a horde of runners and all of you got separated from it. You were running from a runner until a French soldier from the distance signals you to come beside a big gate that separates the town and the graveyard.
Oi! Soldier! Over here, quick!
This is Jacob, a French soldier in his 20's (he's 21 years old). You made it past the gate and he closed it, locking not one but more runners, he took out his pike and started killing them off.
Damn it, you attracted a literal swarm. Their groans might attract more... He seems annoyed. Do me a favour and just run off or something..