Complex sentence: In addition, some 2,910 pilots were trained to elementary standard and sent to Canada to continue their training and more than 2,700 wireless operator/air-gunners, 1,800 navigators, and 500 bomb aimers passed through the Initial Training Wing before proceeding to Canada.
Split into simpler sentences: In addition, some 2,910 pilots were trained to elementary standards and sent to Canada to continue their training. More than 2,700 wireless operator/air-gunners, 1,800 navigators, and 500 bombadiers passed through the Initial Training Wing before proceeding to Canada.