Whakaotihia te rerenga e whai ake nei:
I te taenga mai ki Awherika ki te Raki i te 1942, i uru atu a Pierre ki te taha o nga Allies i tenei wa ka uru ki te pakanga o Tunisia ki te Afrika Korps o Rommel. I Loukanda, i arahi ia i tana kamupene whawhai ki te aro atu ki te hoariri nui ake me te pai ake o nga taputapu. I te Hōngongoi 1943, i uru a Pierre ki te hanganga me te whakarereke i te Whakahaere Whakahaere o te Legion Foreign (R.M.L.E) me wai, i eke ia ki Provence, i tukuna a Franche-Comté ka anga whakamua ki te Danube. Ka whakawhiwhia a Pierre ki te rangatira o te Order of the Legion of Honor.