«There’s a lot of talk about batting now in white-ball cricket, but our bowling is absolutely critical,» Langer said.
«In T20 it’s absolutely critical and the same in ODI cricket.
«You’re going to have a pretty thick skin to do well in international cricket, particularly on the flatter wickets and the fast outfields and the big squares we play on in England.
«They’re going to have to have thick skin but they’re physically tough and mentally tough and they’ll be ready for it.»
The team travel down to Southampton on Sunday where they’ll play three warm-up matches, starting with an unofficial fixture with the West Indies on Wednesday.
On Saturday, they face tournament favourites England, ahead of a final hit out against Sri Lanka next Monday before kicking off their campaign against Afghanistan on June 1.
Langer admits the matches are crucial to ensure the team are not underdone in English conditions ahead of a tricky opening fixture against a side boasting spin sensation Rashid Khan.
«My biggest worry for the World Cup is we need to get match hardened again,» he said.
«By the end of the summer, we played very well against Pakistan. The boys were a bit weary, but they were up and running.
«So we’re going to try to get out in the middle as much as possible.
«We’ve got three practice games in the next 12 days I think, every chance we get to get on a centre wicket is very important for us.»
The return of David Warner and Steve Smith has bolstered belief around the squad that a sixth successful World Cup is achievable and Langer said the pair have slotted back into the team effortlessly.
«I watched Steve Smith batting against new Zealand in those three practice games, he’s literally a master of the game,» Langer said.
«It’s been hilarious for me because whether on the Anzac Cove or in the lunch room or we’re in the bus playing cards, he’s just shadow batting the whole time.
«He literally loves batting, he’s shadow batting on the sand, he’s shadow batting in the shower.
«From that point it’s great to have him back.
«Dave’s got that look in his eye, he’s really hungry.
«He’s a great player as we all know, he’s so dynamic, he brings so much energy, and that’s what we ask from our players.»