The sentence using the correct capitalization is the third:
"The Red Cross is a liaison for the families of soldiers stationed in other countries, acting as a go-between for separated spouses, parents and children."
Neither <em>liaison</em> nor <em>soldiers</em> need to be capitalized, since they are only common nouns, while the <em>Red Cross</em> is the proper noun of an institution and as such, it needs to have each word capitalized.
The Red Cross is a <em>proper name</em>, so it has to be caitalized, whereas the words soldiers and liaison are <em>common nouns</em> and in this case shouldn´t be iniciated with upper case. Therefore the correct alternatice is: <em>The Red Cross is a liaison for the families o soldiers staitioned in other countries, acting as a go-between for separeted spouses, parents and children.</em>
Something that makes me happy are sunsets. Sunsets are gorgeous, and make the earth feel so beautiful. The colors warm my heart. It’s almost impossible to watch a sunset and not dream.