Originally Posted by Duke of Marmalade
I'll take the educated guess that Letizia is too intelligent not to do this on purpose. Maybe she just isn't into the military.
It really must have a Special reason for her not "honoring" Military duties. Yes, she joined, but with the most casual Outfits, she is able to find in her wardrobe. Must be a reason for that. On the other Hand, her Father-in-Law may tell her, how important it may become having the Army behind you in "Special circumstances"