The foremost probably was the sheer need for military manpower that made it attractive to recruit bands of Germanic peoples for the armies.
最重要的可能是对军事人力的绝对需求，这使得招募日耳曼人加入军队变得很有吸引力。
3
The document is a powerful reminder of the manpower on which European mountaineering expeditions depended, and also of the importance of local knowledge and assistance.