It's a shame that in Animorphs we don't see many large-scale battles between the Andalites and Yeerks, especially on the ground. We do see several space battles and glimpses of the Battle of Leera but that's it. I know the books weren't trying to glorify war but it seems like a missed opportunity to me. As the Andalites have such a unique physiology compared to humans, their style of warfare would be completely different to ours, which I find interesting. For example, Andalites appear to prefer using their tail blades for close quarters combat instead of using ranged weapons. I think their tactics would revolve around mobility and getting into close combat as quickly as possible.
I can imagine the Andalites charging in to Yeerk lines like an old fashioned cavalry charge, but this seems to be rather dangerous. The reason we don't use those tactics any more is because the charging army is generally gunned down before reaching the enemy. Although Andalites are faster than humans and could close the distance faster, their charge could still be easily stopped with the right weapons. However, the reason they aren't is because the Yeerks also prefer close combat, even though it is stated that Andalites are better at it than Hork-Bajir.
Andalites are also claustrophobic, which means they probably wouldn't use ground vehicles like tanks too often. In book 18 skimmers are mentioned, which might be their alternative to tanks. I imagined them to look like the desert skiffs from Star Wars, open topped for speed and ease of access. It would make sense for Andalites to use some form of transport to get into close combat, which is what they are good at.
What do you think? Post your opinions here.