Neat knives. All are US issue (or supplied) automatic knives except for the second from the left; this one is a manual shroud cutter only.
All except those with orange handles (scales) are WWII vintage. WWII knives are Geo. Schrade with either metal, plastic or bone handles.
Second from the top is very rare 'Hawkbill' by Geo. Schrade.
The two outside (left & right) are MC-1 post War autos by Camillus & Logan/Smyth (interesting story on the Logan/Smyth brand).
Hope you enjoy!