What is this system?

[Wdll]

Just watched a random video and can someone who knows better tell me what exactly this is at time index 0:36 and 1:31 ?



https://youtu.be/BxmBgpagges?t=36

[Mobhack]

rh Mk202
unit #174 in Greek OOB
https://www.youtube.com/watch?v=xkW6Swjdwgc
https://www.youtube.com/watch?v=8EPqJdafSRw

[Wdll]

rh Mk202
unit #174 in Greek OOB
https://www.youtube.com/watch?v=xkW6Swjdwgc
https://www.youtube.com/watch?v=8EPqJdafSRw

Cool, thank you.