Yeah, i recommend sending a flier with 1-2 range to the hawk army. It helps a lot. Gold/silver knights are also decent here if only for 4-2. For 4-5 have elincia rescue (staff) someone over to kill izuka in 1 turn. Your silver looks way too overkill. You only really need haar, maybe jill for it. Ur greil looks decent but ur hawk could use 1 or 2 more 1-2 range high move units, so yeah, send marcia to hawk.