Radio images of the W43/W44 region. From top to bottom: band-3 and band-4 mosaics from this project convolved to the common beam size of 25″, their resulting spectral index map, the 1.4 GHz THOR image of the same area combined with the VGPS data (Beuther et al. 2016; Stil et al. 2006), which is also at 25″ resolution, and the 5.8 GHz GLOSTAR data (VLA D-configuration image combined with the Effelsberg image), which is at a resolution of 18″.