(Corrects number of strikes to 13 from 14 in second par)
* Strike to run 0600-2159 GMT Tuesday
* Long-haul flights, cargo flights from Germany affected
BERLIN/FRANKFURT, Sept 7 (Reuters) - German pilots' unionVereinigung Cockpit (VC) called for an all-day strike onLufthansa's long-haul flights, starting Tuesday,increasing pressure on management in a long-running dispute overpay, retirement benefits and cost cuts.
The union said on Monday the strike, the 13th walkout in 18months, would affect all long-haul passenger flights and allcargo flights out of Germany from 0600 GMT to 2159 GMT onTuesday.
Lufthansa is trying to lower costs as it battles to maintainmarket share against low-cost rivals such as Ryanair,which are targeting Germany.
Relations between the union and management broke down againlast week. The union has offered concessions, includingincreasing the average retirement age to 60 and looking at waysto bring costs down to a level comparable with easyJet.
"With our offer, we made it clear that the pilots are notagainst the necessary adjustments," VC spokesman Markus Wahlsaid in a statement on Monday.
But as a precondition for talks, VC wants Lufthansa to haltthe process of employing staff on non-German contracts for theexpansion of its budget Eurowings division.
Lufthansa has said the expansion of Eurowings is not up fordebate.
A spokeswoman for Lufthansa said the airline regretted thestrike decision and would do everything possible to ensureflight connections could be maintained. (Reporting by Victoria Bryan and Ludwig Burger; Editing byClarence Fernandez and Louise Heavens)