Rubuta ci gaba don wannan sakin layi - Daga baya, yayin kamfen na Yaƙin Duniya na I, Lecca ya kasance Kyaftin na Ma'aikatar Makamai a cikin Rukunin na 22, wanda ya janye tare da sauran sojojin zuwa Yammacin Moldavia. Hakanan a wannan lokacin, wani bita na "Dandanaua" ("Mishap") ya kasance Maximilian a cikin Bucharest da Jamus ta mamaye
An soke shi bayan rahotannin cewa yana ba'a ga masu mamayewa. Yayin da yake murmurewa a Podu Iloaiei a lokacin hunturu na 1916, Lecca ya nuna alamun rashin lafiya mai rauni (wani lokacin ana bayyana shi a matsayin raunin yaƙi), yana shaida wa Ludovic Dauș cewa yana mutuwa a hankali, amma har yanzu yana fatan samun magani mai banmamaki. An dakatar da shi a lokacin rani na 1917, yana zaune a Iași, tare da Natalia Lecca a matsayin mai kula da shi. Daga cikin ayyukansa na ƙarshe akwai wani kundin shayari, "Simpla" ("Mai Sauki"). Kusan gaba ɗaya a cikin 1918, ya ci gaba da kasancewa mai hankali da amsawa duk da cewa, kamar yadda Iorgulescu ya tuna, ya mutu a cikin zamantakewa.