Probably seen them sometime between the 90’s to early 2000’s, but they could have been made sometime earlier.
If someone could supply the titles, I would be grateful, google is inundated with anime, but sub genres are surprisingly hard to wade through.
First is a mars type enviroment, with star wars style land crawlers, but longer. Instead of fighter planes, this carrier would discorge motorcycles of some kind. not Macross
possibly two separate movies,that looked like they were set in tokyo, at least one of them had a zepplin/blimp traverse the city disgorging what looked like poison gas, for the point of view to change from not wearing gas masks, to wearing gas masks, in just a frame
The second looked like a coup de’tat was happening in Japan, and the protagonists were concerned about american intervention.
Declan