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In August of 2007, Denmark and Lithuania removed their combat troops from Iraq.  The Lithuanians were withdrawn from the southern city of Basra where they’d been under Danish command. 
Over 750 Lithuanian soldiers served in Iraq and not one was killed.  Nine Lithuanian soldiers are staying in Iraq to help train Iraqi troops.
Congratulations to the Lithuanian nation on the safe return of their troops.  Personally, I’m thrilled that not a single Lithuanian soldier died in the invasion and occupation of Iraq, and hopefully, none will be.

We already learned how to use the genitive case or kilmininkas with feminine nouns.
-a changes to –os and –ė changes to –ės.
Now let’s go over masculine nouns.  Most masculine nouns end in –as, -is, -ys, and –us.
Before we do the genitive examples, here are some masculine nouns in the nominative case or vardininkas.
Prašom pakartoti, please repeat…

Ignas              Ignas, a man’s name, short for Ignacas
Ignas  
vyras              a man or a husband
anglas             the Englishman
brolis              a brother
šalis                the country
šalis                a country
lietuvis            the Lithuanian male
Vilnius            Vilnius, the capital of Lithuania
Bronius           Bronius, a man’s name
Bronius
Andrius           Andrius, a man’s name, short for Andrejus
Andrius           Andrejus
durys              the door
durys              a door
Kazys             a man’s name, it’s old fashioned but recently it’s become more popular
Kazys  
kambarys        a room
kambarys        the room
Budrys            Budrys, a man’s last name
Budrys
bankas            the bank
bankas            a bank

In the genitive case or kilmininkas, masculine nouns change like this…
If they end in –as they change to –o if they end in –is or –ys they change to –io and if they end in –us they change to –aus.

So, let’s do some examples, please repeat, prašom pakartoti…

Ignas’ book
Ignas changes to Igno              Igno knyga
Ignas’ house                           Igno namas
The man’s brother
vyras changes to vyro              vyro brolis
The husband’s name               vyro vardas
The Englishman’s country
anglas changes to anglo            anglo šalis
The Englishman’s sister           anglo sesuo
brother’s room 
brolis changes to brolio             brolio kambarys
brother’s restaurant                  brolio restoranas
brother’s name                        brolio vardas
the Lithuanian’s country
lietuvis changes to lietuvio        lietuvio šalis
the Lithuanian’s house             lietuvio namas
Vilnius’ bank
Vilnius changes to Vilniaus        Vilniaus bankas
Vilnius’ park                            Vilniaus parkas
Bronius’ name 
Bronius changes to Broniuas      Broniaus vardas
Bronius’ room                          Broniaus kambarys
Andrius’ book
Andrius changes to Andriaus       Andriaus knyga
Andrius’ wife                             Andriaus žmona
The room’s door
kambarys changes to kambario    kambario durys
The house’s door
namas changes to namo              namo durys
Kazys’ wife
Kazys changes to Kazio              Kazio žmona
Kazys’ house                             Kazio namas
Budrys’ book
Budrys changes to Budrio           Budrio knyga
Budrys’ house                           Budrio namas

Excellent!  Now, I’d recommend you go over the genitive case lessons a few times until you’re familiar with each word’s ending.  You’ll be seeing much more of the genitive in the future.  As a matter of fact, the genitive is the most used declension in Lithuanian after the nominative declension.