Russian President Vladimir Putin has ordered the conscription of 133,000 new servicemen in Russia's autumn draft, which starts in October and goes until the end of the year.
The decree, published in Russian state-run newspaper Rossiyskaya Gazeta, calls to carry out the draft of citizens "aged 18 to 30 years, who are not in the reserve and are subject to conscription in accordance with the Federal Law ... in the amount of 133,000 people."
The head of Russia's conscription office, Vice-Admiral Vladimir Tsimlyansky, said the terms for the conscript remain the same: 12-month service in military units in Russia.
"I would like to note that conscripts will not be called up to participate in the special military operation in the new regions," Rossiyskaya Gazeta cited Tsimlyansky as saying.
Russia calls its war in Ukraine, which it started with a full-scale invasion in February 2022, a special military operation. Kyiv and its allies call it an unprovoked, imperialistic attempt to grab land.
In a move condemned by most of the Western world, Russia annexed parts of southeastern Ukraine in late 2022, calling the land "new regions".
Citing growing threats on Russia's western borders, Putin in September ordered the Russian army to be increased by 180,000 troops to 1.5 million active servicemen, a move that would make it the second largest in the world after China's.
Earlier, Ukraine President Volodymyr Zelenskiy said the situation on the front line of the war was "very, very difficult", and Ukraine's forces had to do everything they could over the autumn period.
"Reports on each of our frontline sectors, our capabilities, our future capabilities and our specific tasks: The situation is very, very difficult," he said in his nightly video address after a meeting with top commanders.
"Everything that can be done this autumn, everything that we can achieve must be achieved," he said.
Ukrainian military bloggers have reported in recent days that Russian forces have been advancing on the hilltop town of Vuhledar, which Ukrainian forces have defended over the course of the war, in the south of the Donetsk region.
The popular blog Deepstate quoted Russian reports as saying Russian forces were shelling the town and "their infantry was moving in the city and among high-rise blocks. The Russians have raised their flag in western districts of the city".
Russian forces have also been advancing slowly for months further north, with the aim of capturing the entire Donbas region, made up of the Donetsk and Luhansk regions.
Russia's defence ministry said on Monday its forces had captured the village of Nelipivka, south of the city of Toretsk, one of Moscow's targets in the area.
Ukraine's General Staff made no acknowledgement of the village changing hands, but said Russian forces had launched 10 attacks in and around it.
Zelenskiy made similar comments about the need for fast military action after meeting US Republican presidential candidate Donald Trump in New York on Friday.
Zelenskiy has taken great care to steer clear of controversy and suggestions of preference in the US presidential election and made no reference to the poll in his calls for fast action.
Vice President Kamala Harris, the Democratic Party candidate, has pledged continuing steadfast support for Kyiv.
Zelenskiy said in an interview with Fox News after his meeting with Trump that he received "very direct information" from Trump that the former US president would support Ukraine if re-elected.
Trump has questioned US spending on Ukraine's war effort. During Zelenskiy's visit to the United States last week, he repeated earlier statements that he would find a rapid resolution to the conflict if he won the election, without providing details.
