The joint maneuvers, codenamed Three Swords 2021, are being held at an exercise site of the International Peacekeeping and Security Centre.
Over 1200 troops, and 200 vehicles from the three countries are scheduled to take part in the drills, which are to last until July 30.
The joint Lithuanian-Polish-Ukrainian brigade, more than 4,000-strong and known as LITPOLUKRBRIG, achieved full operational capability in 2016.
It was formed to conduct peace-support and crisis-response operations and to help enhance military cooperation between the three countries, according to officials.
(tf)
Source: PAP