Marching Milde's Fort is is the fourth level of World 4 in Super Mario World 2: Yoshi's Island and Yoshi's Island: Super Mario Advance 3.
The beginning of this stage takes place in a grassed area outside of the fort. It has Chomps and Chomp Sharks swarming around.
When Yoshi enters the fort, he will find four doors to choose from. The first door contains plenty of Lava and Hot Lips. Yoshi must navigate an area filled to the brim with Lava but if Yoshi gets to the end of the area he gets a Key. The second area is a room filled with Bandits, Snifits, and Bullet Bills. If Yoshi can navigate this room with out getting Baby Mario stolen, he will receive a Key. The third area has lots of Thorns and Spike Bandits. It also has Ghost Arrow Lifts. Yoshi gets a key at the end of the area. The fourth area has every plant-based enemy in the game guarding the last key. If Yoshi can defeat them all, he well receive the last key.
Now it's time for Yoshi to use these keys in the center hub area where there is a locked door that Yoshi opens with the first key. The first room is filled with Marching. The second one is filled with other enemies in the floor and ceiling. The third one is filled with lava and some red coins along with a tilting platform as a bridge. The last room feature various of Mildes. It also has the entrance to Marching Milde's chamber where Yoshi must battle and defeat her.
 Names in Other Languages
Biggu Puchipuchi no Toride
|Marching Milde's Fortress
||Big Puschels Festung
||Marching Milde's Fortress
Chāoquǎn Bùqí bǎolěi
|Super Dog Poochy Fortress