French army postal service free of charge letter of a member of the 22. Company / 25. Alpine hunter battalion (B. C. A. ) / fieldpost number S (ecteur) P (ostal) 184 from Gliwice to Gamardeles Bains (Dep. Lande), single circle TRESOR ET POSTES * 20 -12 21 * 184 * (OS handbook number FP3 db, arrival postmark single circle GAMARDE LES BAINS 27 12 21 LANDE at back, transport traces