With Glolov's machine gun suppression, Frey had the opportunity to precisely throw grenades through each window.
Leaning against the wall, Frey pulled out a grenade, took a couple of steps back, threw the grenade through the window, then returned to the base of the wall to grab another one. He repeated the action, retreating a few steps each time before lobbing another grenade, methodically blasting through every visible window.
Although it was a small building, it was at most two slightly larger residences, totally different from apartment buildings in the city. If a comparison had to be made, the architectural type was more like a pair of villas, but because of the surrounding walls, the rooms on the ground floor couldn't be attacked with grenades.
To completely resolve the battle, they had to enter the courtyard. The upper floors were basically silent now, but what the situation was on the first floor was unknown.