Answer: aef

AnswerCrossword Clue
AEFW.W. I military grp.
AEFW.W. I initials
AEFW.W. I grp.
AEFYanks, WWI-style
AEFWWI troop gp.
AEFUS Army in Europe
AEFPershing's troops: abbr.
AEFDoughboys' grp.
AEFGen. Pershing's grp. in W.W. I
AEFW.W. I mil. group
AEFThe doughboys
AEFGen. Pershing's troops: Abbr.
AEFW.W. I troops: Abbr.
AEFW.W. I inits.
AEFGen. Pershing's men
AEFPershing's org.
AEFDoughboys' gp.
AEFBlack Jack's com.
AEFBlack Jack's outfit
AEFW.W. I body: Abbr.
AEFPershing's men
AEFW. W. I initials
AEFW. W. I outfit
AEFW.W. I group
AEFW. W. I force
AEFW. W. I group
AEFPershing's group
AEFPershing's gp.
AEFW.W. I force
AEFPershing's command
AEFPershing's W.W. I command
AEFW.W. I army
AEFW.W. I overseas army
AEFPershing's men in Eur.
AEFW.W. I outfit
AEFPershing's cmd.
AEFPershing's men in W.W. I
AEFPershing's trps
AEFYanks of W.W. I
AEFDoughboys' org.