Ukraine banks on vintage Soviet rocket launchers to support the counteroffensive against Putin's invasion, report says

• Ukrainian troops are using a Soviet-era rocket launcher, the BM-21 Grad, to hit Putin's forces.
• The vintage weapon is called "grandma" by Ukrainian crews, The Wall Street Journal reported.
• The Grads are"not the most accurate" but are "effective for suppression fire," said a military expert

Ukrainian commanders have been using Cold War-era rocket launchers to strike back against Russia in its counteroffensive, the Wall Street Journal reported.