He fired so many rounds that by Friday his eardrums burst , so he shoved scraps of field dressing in his ears and kept going . When PIAT ammunition ran out , he switched to a two - inch mortar , at times firing it nearly horizontal . By the end of the week - long battle , he had destroyed or disabled some six tanks , four of which were Tiger tanks , the most feared in the German arsenal . Oh , and he was thirty - five at the time .

Question: What war may be being described ?
Answer: WWIKorean WarWWIIVietnam War