Mutiny is the correct answer because it accurately describes the situation when soldiers as a group disobey their officers in the army. A mutiny is a deliberate and organized revolt or rebellion against authority, typically by military personnel. It involves a group of soldiers openly defying orders or refusing to follow the commands of their superiors.

Here is a detailed explanation of why the term "mutiny" is the appropriate choice:

Mutiny in the Armed Forces:
- A mutiny occurs when soldiers, who are usually bound by strict military discipline, collectively rebel against their officers and refuse to obey orders.
- Mutinies can happen for various reasons, such as dissatisfaction with living conditions, low morale, grievances against officers, mistreatment, lack of pay, or political reasons.
- Mutinies can pose a significant threat to the hierarchy and discipline within the armed forces, as they undermine the chain of command and disrupt military operations.

Historical Examples:
- The term "mutiny" gained significant prominence during colonial times when the British Empire had a vast military presence across the world.
- One of the most well-known mutinies in history is the Indian Rebellion of 1857, also known as the Sepoy Mutiny, where Indian soldiers in the British East India Company's army revolted against their British officers.
- The Sepoy Mutiny was sparked by multiple factors, including the introduction of new rifle cartridges greased with animal fat, which offended the religious beliefs of Hindu and Muslim soldiers.
- The mutiny quickly spread across different parts of India, leading to a widespread rebellion against British rule.

Significance and Consequences:
- Mutinies have far-reaching consequences, both within the military and in the broader political context.
- They can lead to a breakdown of discipline, loss of morale, and damage to the reputation and effectiveness of the armed forces.
- Governments and military authorities often respond harshly to mutinies, using force to suppress the rebellion and restore order.
- After a mutiny, there are usually investigations, trials, and punishments for those involved, which can range from imprisonment to execution.

In conclusion, a mutiny is the appropriate term to describe the situation when soldiers as a group disobey their officers in the army. It signifies an organized rebellion against authority and can have significant consequences for military discipline and the overall functioning of the armed forces.