Kammala wannan jumla: Ra'ayin Roberts na dabarun layi yana da mai sukar farko a cikin matashin masanin tarihi Geoffrey Parker, wanda ya yi tambaya me yasa ake zaton tsoffin tercios na Spain sun kayar da tsarin layi na Sweden a
Yaƙin Nördlingen a shekara ta 1634. Parker maimakon haka ya nuna cewa babban ci gaba shine bayyanar da makamai na Italiyanci a farkon zamani na Turai. A cikin wannan ra'ayi, wahalar ɗaukar irin waɗannan sansanonin ya haifar da canji mai zurfi a cikin dabarun soja. "Yaƙe-yaƙe ya zama jerin doguwar kewaye", in ji Parker, kuma yaƙe-yaƙe a fili sun zama "marasa amfani" a yankuna inda trace italienne ya wanzu. A ƙarshe, Parker ya yi jayayya, "yanayin soja", a wasu kalmomi kasancewar ko rashin Italiyanci a cikin wani yanki, ya tsara dabarun soja a farkon zamani, kuma ya haifar da ƙirƙirar manyan sojoji da ake buƙata don kewaye da sababbin kagarai da kuma garrison su. Ta wannan hanyar, Parker ya sanya haihuwar juyin juya halin soja a farkon karni na 16. Ya kuma ba da sabon ma'ana, ba wai kawai wani abu ne na ci gaban jihar ba, shi ma babban abu ne, tare da "Juyin Juya Hali" zuwa ga Yunƙurin Yammacin sauran Al'adu.