WASHINGTON - The Flyers have rallied around a unified battle cry, one that basically suggests that the troops have to dig a little deeper in these injury-plagued times.

So on the day they found out that the NHL's leading scorer, Claude Giroux, is out indefinitely with a concussion, the Flyers received key offensive contributions from some old standbys along with a newcomer to the scoring sheet.

It all added up to a 5-1 win over the Washington Capitals at the Verizon Center, extending the Flyers winning streak to six games.

"I thought it was one of our better games, just complete from start to finish," Flyers coach Peter Laviolette said.

The Flyers (19-7-3) continue to lead the Eastern Conference with 41 points.

"We have a good team," said defenseman Kimmo Timonen. "It doesn't matter how many guys we are missing I think we showed today we can play pretty good hockey against a pretty good team out there."

Everybody from Laviolette to each of the players talked about the importance of carrying a little extra offensive weight in the absence of Giroux.

And the Flyers did plenty of heavy lifting.

Five different players scored.

It's probably no coincidence that Scott Hartnell has scored in every game of this six-game winning streak.

Hartnell was one of the players who talked about picking up the slack for his injured linemate Giroux and he did exactly that, scoring the game's first goal on a wrist shot - the 200th of his career - that was an indication of the difficult night Capitals goalie Tomas Vokoun would have.

It was a soft goal, but the Flyers weren't complaining.

In fact, Vokoun was pulled after two periods with the Flyers holding a 4-0 lead.

The Flyers put things away with three second-period goals, the first scored by an unlikely source.

Defenseman Marc-Andre Bourdon scored on a wrist shot inside the blue line on a pass from Zac Rinaldo. Jody Shelley provided a screen and it initially appeared as if he tipped it in, but the puck apparently went off the stick of Washington's Mathieu Perreault.

"I was happy but I didn't even know it was me who scored," Bourdon said. "I shot the puck and thought maybe it tipped off one of their guys or thought maybe Shell scored."

After some reflection, it hit Bourdon what he had achieved.

"I thought about it after the period and started to realize I scored in the NHL," Bourdon said. "It's kind of a dream and great that I helped the team win because that is what I care about."

The goals kept coming. Wayne Simmonds made it 3-0, scoring in his third straight game. Simmonds did a great job of keeping the puck in the zone and skated from behind the net to tip in a shot by Andrej Meszaros.

Maxime Talbot made it 4-0, scoring on a wrist shot that quite frankly Vokoun should have had.

Jake Voracek scored the fifth goal on a third period tip-in against Washington goalie Michal Neuvirth.

Washington averted the shutout on a tip-in by Jeff Halpern with 6 minutes, 1 second left in the third period.

Ilya Bryzgalov, who left the Flyers' 5-2 win over Tampa Bay with 13:01 left in the third period due to a lower-body injury, was in goal for the Flyers. He had a strong performance as did defenseman Matt Carle, who had two assists and earned the game's No. 1 star.

Contact staff writer Marc Narducci at 856-779-3225, mnarducci@phillynews.com, or @sjnard on Twitter.