Question

by engaging in proxy wars, were the united states and the soviet union able to avoid involving their own military forces? why or why not?
no, both countries deployed large parts of their military forces to fight under the flag of another country
yes, the u.s. military never directly engaged in these proxy wars.
no, both countries still fought in proxy wars but not directly against each other.
yes, by definition, a proxy war means that there was no direct involvement of either nation

Explanation:

To solve this, we analyze each option:

• Option 1: Deploying forces under another flag is direct involvement, but proxy wars typically use local/proxy forces, so this is incorrect.
• Option 2: The US did have direct engagement in some proxy wars (e.g., Vietnam had US troops), so this is wrong.
• Option 3: In proxy wars, the US and USSR supported proxies (like in Korea, Vietnam, Afghanistan - Soviet side) and didn't fight each other directly, but their militaries were involved indirectly (supplying, training, sometimes limited direct action). So they still fought in the context of proxy wars (supporting sides) but not directly against each other. This matches.
• Option 4: Proxy wars don't mean no direct involvement at all; there could be limited direct action (e.g., US in Vietnam), so this is incorrect.

Answer:

No, both countries still fought in proxy wars but not directly against each other.