Factual error: The WW1 flashback in the bunker shows a fireplace carved out of stone and brick in the wall. Fireplaces like this, with heavy-cut stone arches, were more typical of civilian or 19th-century farmhouses, not military dugouts or British bunkers of WW1. Frontline dugouts used makeshift tin stoves or field ovens, not full fireplaces.
Factual error: Once you pick up the lighter, the character player model holds it lit, but the finger is not on the button. The lighter appears to be modeled after a standard BIC style lighter where the striker is flicked and then the thumb is held on the red button to keep fuel going into the flame to maintain the light. If the thumb comes off the button, the fuel stops and the fire goes out. However, in this game, the model is shown with the thumb not on the button, but the lighter is still held lit.