Sentence:  Instead, British historian Dr Alfred Price has suggested that, had a smaller number of these bombers been available a year later, the results in the <WSD>mid-Atlantic</WSD> battle might have been very different. 
Meaning of the word marked with <WSD> tags:  (Used as an attributive modifier in compounds such as "mid-Atlantic current" and "Mid-Atlantic Ridge"): located in, or otherwise relating to, the mid-Atlantic.