Pardon GFX,
Not certain if you are referring to my comments or not? When I mention military, I was referring to the use of armor, especially styles that go back to the Song Dynasty.
Indeed, northern styles don’t take longer per say, then southern styles; however, we must look at the intricacy within certain northern styles, i.e., fanziyingzhaoquan, liuhetanglangquan, etc., possess very intricate da (strike) notions, which takes time to master.
However, you mention a few styles here that have roots in military, but were transmitted to peasant; for example, a military officer, Hua, Zongqi passed his knowledge of jiaziquan to the peasants of Guanxian County, Shandong Province. Then, Hua invited his classmate Cha, Yuanyi to assist him in transmitting the art of jiaziquan to this community. In time this art would be divided into two styles, carrying the surname of their respected Shifu, i.e., huaquan and chaquan.
Then you have the case Chen shi taijiquan, which was originally transmitted by Chen, Wangting, who was an officer under the Ming Dynasty and was greatly influence by General Qi, Jiguang, who author a manual on military fighting arts.
Indeed, you are right- warriors, traditionally emerge as farmers and at the end of their military lives they return home to harvest the crops; this cycle still continues to this day in age through out numerous societies.
However, because the nature being of a farmer is waiting for harvest- it gave them the opportunity to developed intricate style, because time was on their side, not like styles like yongchunquan, which was designed to learn quickly, i.e., less lu, etc., because the practitioners were traveling actors.
However, the actual problem here is - nothing in Chinese martial arts can be actually stereotyped; hence, describing one style may not work for the next one. :o