Apparently Acho used the hammer instead of the screwdriver here ...

src/mame/drivers/combatsc.c

@@ -3,10 +3,8 @@
 "Combat School" (also known as "Boot Camp") - (Konami GX611)
 
 TODO:
-- in combatsc (and more generally the 007121) the number of sprites can be
-  increased from 0x40 to 0x80. There is a hack in konamiic.c to handle that,
-  but it is wrong. If you don't pass the Iron Man stage, a few sprites are
-  left dangling on the screen.(*not a bug, 64 sprites are the maximum)
+- Ugly text flickering in various places, namely the text when you finish level 1.
+  This is due of completely busted sprite limit hook-up. (check konicdev.c and MT #00185)
 - it seems that to get correct target colors in firing range III we have to
   use the WRONG lookup table (the one for tiles instead of the one for
   sprites).

src/mame/video/konicdev.c

@@ -1445,8 +1445,9 @@ void k007121_sprites_draw( device_t *device, bitmap_t *bitmap, const rectangle *
 	}
 	else	/* all others */
 	{
+		/* TODO: sprite limit is supposed to be per-line! (check MT #00185) */
+		num = 0x40;
 		//num = (k007121->ctrlram[0x03] & 0x40) ? 0x80 : 0x40; /* WRONG!!! (needed by combatsc)  */
-		num = 0x40; // combatsc writes 70 sprites to VRAM at peak but the chip only processes the first 64.
 
 		inc = 5;
 		offs[0] = 0x00;