11. The wood towers stood in a close formation . 12. It works like several aircraft flying in close formation , but they happen to be structurally interconnected, 13. It works like many aircraft flying in close formation , but they do happen to be structurally interconnected, 14. The drawback was slight and minor surges that made the Fw 190 harder to fly in close formations . 15. However, the tactic depended on well trained and drilled troops who could move in unison while in close formation . 16. Abrams said the sandstorm can indeed provide cover and allow troops to reposition themselves while moving in closer formation . 17. The heavy infantry fought in close formation , armed with long spears and round shields, wearing helmets and linen cuirasses. 18. De C�rdoba introduced a closer formation , dividing the Spanish infantry among the central body of pikemen and shooting wings. 19. Colonel Smith's men approached like a fleeing mob with the full complement of colonial militia in close formation pursuing them. 20. A single AIM-54 fired in July 1982 by Captain Hashemi may have destroyed two Iraqi MiG-23s flying in close formation .