Rubuta ci gaba ga wannan sakin layi - An sake mayar da shi a matsayin mai kula da jirgin sama, Jennings ya yi aiki a cikin yakin juyin juya halin Faransa. Ya kasance Kwamandan Kwamandan karkashin Charles François Dumouriez da Lafayette. Ya yi aiki da ƙarfin hali a yakin Valmy
a watan Satumbar 1792, lokacin da wani rukuni na hussars a karkashin umurninsa ya ceci dukan sashen Faransa daga hallaka. A watan Nuwamba na 1792 a yakin Jemappes, ya yi yaƙi da ƙarfin hali. Lokacin da yaƙin ya zama kamar an rasa, Kilmaine da Duke na Chartres (Louis Philippe) sun juya rashin nasara zuwa nasara. A fagen an daukaka shi zuwa mukamin Babban Kanar, kuma daga wannan rana har abada bayan an san shi da "le brillant et courageux Kilmaine".