Karen group Cobra Column attacked Burmese junta forces in Wawlay using RPGs and small arms.
The Steel Butterfly Force used hexacopter drones to bomb Burmese military positions in Launglon.
Myanmar's junta expects to begin its first recruitments under a new military service law in September.
Anti-junta fighters in Myanmar have deployed a modified M16A1 rifle converted into a grenade launcher to fire an improvised explosive device.
Thailand is offering to lead efforts to reintegrate Myanmar into ASEAN after five years of isolation.
A campaign backed by Aung San Suu Kyi's son demands clarification on whether the former leader is still alive.
Myanmar's junta president proposes July peace talks, but two major rebel groups have turned down the offer.
A massive fire at the port of Homalin in Myanmar has engulfed over 10 oil tankers, causing deaths with the number of victims expected to rise.
Karen fighters in Myanmar's Kayah State have been filmed using a Thai-made NATO-standard Type 11 assault rifle during clashes with junta troops.