Episode 53...

"We're here."

At Aqua's words, Scarlet craned her neck outside the carriage window and saw the gates of Donatel. In front of the gates, the crimson army was waiting there, ready to greet them. 

She couldn't stop her heart from beating loudly inside her chest from the excitement. The crimson army looked intimidating as she imagined it to be. They stood there, with their full plated armor, and every soldier was wearing the famous blood stained armor. Every soldier was oozing with oppressive presence, and it was overwhelming to be on the receiving side of that strength.

I wonder what Donatel looks like inside, Scarlet thought. She always wanted to meet the crimson army. They were Scarlet's strongest and most elite, aside from the Scarlet Order.

Scarlet's gaze moved to the city walls. Donatel was an outpost that never existed before the great wars. So, Scarlet was clueless as to where it was and how big it is inside.