SQL Server :: Inserting Multiple Records Under The Single Query?

I have to insert a multiple records under the single table.So i have to execute the command in the frontend for every records.

Inorder to avoid i write the query like this

insert into table1(field1,field2) values('1','Test1'),('2','Test2');

and also i tried

insert into table1(field1,field2)

SELECT "1","Test1"

Union all

SELECT "2","Test2"

But I am getting syntax error.

How to insert a multiple records under the single query?