There is no definitive answer to this question, as it depends on the individual and their preferences. However, if we take a look at the two most popular units in the military, Emilia and Rem, we can see that they have different strengths and weaknesses. Emilia is known for its strong offensive capabilities, which makes it perfect for attacking enemy positions or strongholds. On the other hand, Rem is known for its defensive capabilities, which makes it perfect for defending allies or strongholds. Based on these two factors, it seems that Emilia would be better suited for larger engagements while Rem would be better suited for smaller engagements. However, there are many other factors that could also play into this decision-making process, so it is ultimately up to each individual to decide who they believe is better.