Frank Mulligan’s 5th Special Forces Group (ABN) issued 7-inch SOG knife.
Frank D. Mulligan served three tours in Vietnam. His first tour was in 1963 with 5th Special Forces Group (5th SFG (ABN)) assigned to a B-Team. He returned for a second tour was in 1965 with 5th SFG assigned to Kham Duc. Frank’s final tour was in 1969 with the II Corp Mike Force as part of the Special Weapons Platoon for the battle of Nui Coto (Flame Throwers) and later Headquarters Company.
The 7-inch SOG knife was designed by Conrad “Ben” Baker in 1964 on behalf of a request from 5th Special Forces Group for a good quality fighting knife to be issued to operational personnel. The blue prints were submitted to several Japanese companies that provided examples to CISO. One unidentified company was awarded the contact and manufactured 1300 knives at a cost of $9.85 a piece.
Once the knives were received by CISO it was noted that there was an issue with the blades design. The knifes ricasso feed directly into the cross guard and could not be easily withdrawn when they were stuck into pig carcasses. The knives were returned to the manufacture and a finger grove was ground into the blade before they were reassembled. It should be noted that on an original wartime 7-inch SOG knife there is a small void on the bottom of the cross guard where the blade was reshaped.