My great grandfather (who originally Algerian served in the French Army in the early 1910 when Algeria was part of France) passed away in Syria during his service. I am not sure how he died. His widow (Syrian citizen) continued getting his pension until the 1960s when the French government stopped paying.
Can we apply for French citizenship given that he was serving in the French army until his death. As Algeria was part of France on the day he died, I think it is logical to assume he was French at that time. Do we need a lawyer to prove the case? Can you recommend one who may have such experience?