Call of Duty 3
26 Achievements
1,000
40-50h
Xbox 360
Xbox One
Xbox Series
American Infantryman
Fought in the war as an American Infantryman.
20
How to unlock the American Infantryman achievement in Call of Duty 3 - Definitive Guide
Complete the first two missions (Saint Lo and The Island) of fourteen and the achievement is yours.
Go through the single player campaign and after completing two missions as an American soldier, you will pick up this achievement. This can be done on any difficulty.