No, "reassigned" does not need to be hyphenated. The prefix "re-" is commonly used with verbs and is typically not hyphenated unless it precedes a proper noun or creates confusion. Therefore, "reassigned" is correctly written as one word.
No it doesn't need to be hyphenated.
No it doesn't need to be hyphenated.
The noun phrase 'four week vacation' does not need to be hyphenated.
yes for clarification
The term "buy-in" is typically hyphenated when used as a noun to refer to an agreement or acceptance of a proposal. For example, you might say, "We need to get buy-in from the team." However, when used as a verb, it is not hyphenated, as in "We need to buy in to the new strategy."
They ordered my father to leave. So did the Japanese government, which reassigned him to Germany.
No it doesn't.
After recovering from his injury, Lt. Dan was reassigned to a forward unit.
does write up need a hyphen
No it doesn't need to be hyphenated.
No the word "midday" is not hyphenated.
Yes it should be hyphenated.