In this photo taken Monday, June 22, 2015, a Ukrainian serviceman from the Kiev-2 volunteer battalion guards his position at the frontline in the village of Krymske, east Ukraine. Few places along the front line in east Ukraine see regular fighting as bitter as the village of Krymske. For now, Krymske is in the hands of Ukrainian government forces and the volunteer battalions that fight alongside them. (Photo by Evgeniy Maloletka/AP Photo)

In this photo taken Tuesday, June 23, 2015 a Ukrainian serviceman from the Kiev-2 volunteer battalion guards his position at the frontline in the village of Krymske, east Ukraine. (Photo by Evgeniy Maloletka/AP Photo)

In this photo taken Monday, June 22, 2015, a Ukrainian soldier from the Kiev-2 volunteer battalion throws knifes during a training at the frontline in the village of Krymske, east Ukraine. (Photo by Evgeniy Maloletka/AP Photo)

In this photo taken Monday, June 22, 2015, a Ukrainian serviceman from the Kiev-2 volunteer battalion uses binoculars at the frontline in the village of Krymske, east Ukraine. (Photo by Evgeniy Maloletka/AP Photo)

In this photo taken Monday, June 22, 2015, Ukrainian servicemen from the Kiev-2 volunteer battalion talk atop an armored vehicle with a word on it saying "my love" in Ukrainian at the frontline in the village of Krymske, east Ukraine. (Photo by Evgeniy Maloletka/AP Photo)

In this photo taken Tuesday, June 23, 2015, a Ukrainian serviceman from the Kiev-2 volunteer battalion fires an weapon at a frontline in the village of Krymske, east Ukraine. (Photo by Evgeniy Maloletka/AP Photo)

In this photo taken Tuesday, June 23, 2015 Ukrainian servicemen from the Kiev-2 volunteer battalion carry a box of ammunition at the frontline in the village of Krymske, east Ukraine. (Photo by Evgeniy Maloletka/AP Photo)

In this photo taken Monday, June 22, 2015, a Ukrainian serviceman from the Kiev-2 volunteer battalion fires a machine gun at the frontline in the village of Krymske, east Ukraine. (Photo by Evgeniy Maloletka/AP Photo)

In this photo taken Monday, June 22, 2015, a Ukrainian serviceman from the Kiev-2 volunteer battalion arranges ammunition at the frontline in the village of Krymske, east Ukraine. (Photo by Evgeniy Maloletka/AP Photo)

In this photo taken Monday, June 22, 2015, a Ukrainian serviceman from the Kiev-2 volunteer battalion renders assistance to his comrade at the frontline in the village of Krymske, east Ukraine. (Photo by Evgeniy Maloletka/AP Photo)

In this photo taken Monday, June 22, 2015, Ukrainian servicemen from the Kiev-2 volunteer battalion have a meal at a frontline position in the village of Krymske, east Ukraine. The sign on a flag at left reads “Freedom or death”. (Photo by Evgeniy Maloletka/AP Photo)

In this photo taken Tuesday, June 23, 2015, a Ukrainian serviceman from the Kiev-2 volunteer battalion fires his gun at a frontline in the village of Krymske, east Ukraine. (Photo by Evgeniy Maloletka/AP Photo)

In this photo taken Tuesday, June 23, 2015, a Ukrainian serviceman from the Kiev-2 volunteer battalion cleans his rifle in the village of Krymske, east Ukraine. (Photo by Evgeniy Maloletka/AP Photo)

In this photo taken Tuesday, June 23, 2015, a Ukrainian serviceman from the Kiev-2 volunteer battalion guards his position at the frontline in the village of Krymske, east Ukraine. (Photo by Evgeniy Maloletka/AP Photo)

In this photo taken Tuesday, June 23, 2015, Ukrainian servicemen from the Kiev-2 volunteer battalion guard a position at a frontline in the village of Krymske, east Ukraine. (Photo by Evgeniy Maloletka/AP Photo)

In this photo taken Monday, June 22, 2015, Ukrainian servicemen from the Kiev-2 volunteer battalion talk atop an armored vehicle with a word on it saying “my love” in Ukrainian at the frontline in the village of Krymske, east Ukraine. (Photo by Evgeniy Maloletka/AP Photo)

In this photo taken Monday, June 22, 2015, Ukrainian servicemen ride atop an armored vehicle at a frontline in the village of Krymske, east Ukraine. (Photo by Evgeniy Maloletka/AP Photo)

In this photo taken Monday, June 22, 2015, a Ukrainian serviceman from the Kiev-2 volunteer battalion fires a machine gun at a frontline in the village of Krymske, east Ukraine. (Photo by Evgeniy Maloletka/AP Photo)