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.