Hi Clint
Yes, I am positive they were all taken postwar, most likely Feb-March 1919, at La Louveterie.
Unit was not equipped with DH-9A until August 1918 and the two fully visible aircraft have one with snow (F1001, note last digit) and the other without but weather still cold (E716), so most likely March since unit went back to UK later that month.
Cheers
Stig
PS: Ah, I see Bertrand beat me to it...
