What is referred to by 'assumption ascension'?

What is referred to by 'assume this baseball position'? Based on the clue 'assumed last name of the secretary general of the ...', what is the answer? Based on the clue 'assuming command of britains eighth army he said w...', what is the answer? Based on the clue 'assuming that they lost them all total number of m...', what is the answer? Based on the clue 'assuredly solomon thy son shall reign after me and...', what is the answer? Based on the clue 'assuring the dominance of western culture his forc...', what is the answer? What is associated with: astaire was nominated for a supporting actor oscar for this fiery 1974 disaster epic? Based on the clue 'astanga is a high energy type of this discipline w...', what is the answer?