Final answer:
When asked what every soldier trusts, historical references suggest trust in military discipline, strategic knowledge, and leadership, rather than luck, teachers, the weather, or the Kaiser.
Step-by-step explanation:
The question 'Every soldier trusts?' with the options provided (1) Luck/Chance, (2) Their teachers, (3) The weather, (4) The Kaiser, can be interpreted in the historical context, particularly with references to military discipline, leadership, and the value systems of soldiers during specific periods, such as World War I as mentioned with the German Kaiser, Wilhelm II. From the given passages, it is evident that the key aspects of what soldiers trust or rely upon include military discipline, strategic knowledge, and leadership rather than chance, superstition, or singular figures of authority like the Kaiser.
The excerpts emphasize the importance of discipline within the ranks (military discipline), the relevance of understanding the terrain (knowledge of the battlefield), the cohesion and spirit within the army (unity and morale), and the role of the general in making strategic decisions without interference from the sovereign (leadership).